* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  touch-action: manipulation;
}

body {
  width: 100%;
  height: 100vh;
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  background: linear-gradient(to bottom, #2196f3, #ffffff);
}

.wrap {
  width: 100%;
  height: 100%;
  overflow: auto;
  font-size: 16px;
  text-align: center;
}

.container {
  width: 94%;
  max-width: 600px;
  height: 100%;
  margin: 0 auto;
  padding: 20px 10px;
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}
.container .box {
  width: 100%;
  padding: 20px;
  border-radius: 8px;
  background-color: #211f20;
  color: #fff;
  border: 5px solid #ccc;
  box-shadow: 4px 4px 8px #333;
}
.container .startBtn,
.container .nextBtn,
.container .resetBtn {
  width: 90%;
  max-width: 400px;
  margin: 0 auto;
  padding: 12px;
  font-size: 1.5em;
  border-radius: 5px;
  background-color: #fffffe;
  box-shadow: 4px 4px 8px #333;
  cursor: pointer;
}
.container .startBtn:hover,
.container .nextBtn:hover,
.container .resetBtn:hover {
  background-color: #eee;
}
.container .startArea {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s;
}
.container .startArea.show {
  opacity: 1;
}
.container .startArea.hide {
  display: none;
}
.container .startArea h1 {
  margin: 30px 0;
  font-size: 1.8em;
  line-height: 1.6;
  font-weight: 700;
}
.container .quizArea {
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s;
}
.container .quizArea.show {
  opacity: 1;
}
.container .quizArea.hide {
  display: none;
}
.container .quizArea .questionArea {
  margin-bottom: 20px;
}
.container .quizArea .questionArea .question {
  font-size: 1.5em;
  margin-bottom: 30px;
  text-align: left;
}
.container .quizArea .questionArea .choicesUl {
  width: 100%;
  list-style: none;
}
.container .quizArea .questionArea .choicesUl.unclickable {
  pointer-events: none;
  opacity: 0.8;
}
.container .quizArea .questionArea .choicesUl li {
  max-width: 400px;
  min-height: 50px;
  margin: 0 auto;
}
.container .quizArea .questionArea .choicesUl li:first-child {
  margin-bottom: 16px;
}
.container .quizArea .questionArea .choicesUl li button {
  width: 100%;
  min-height: 60px;
  padding: 12px;
  font-size: 1.6em;
  border: solid 2px #fff;
  border-radius: 6px;
  background-color: #198754;
  color: #fff;
  cursor: pointer;
}
.container .quizArea .questionArea .choicesUl li button:hover {
  background-color: #157347;
}
.container .quizArea .questionArea .choicesUl li button.selected {
  background-color: red;
  color: white;
}
.container .quizArea .judgeArea {
  margin-bottom: 0;
  opacity: 0;
  transition: opacity 0.3s;
}
.container .quizArea .judgeArea.show {
  opacity: 1;
}
.container .quizArea .judgeArea.hide {
  display: none;
}
.container .quizArea .judgeArea .judge {
  font-size: 1.8em;
  margin-bottom: 20px;
}
.container .resultArea {
  margin: 60px auto 0;
  transform: translateY(-1000px);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  pointer-events: none;
}
.container .resultArea.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}
.container .resultArea.hide {
  display: none;
}
.container .resultArea .resultMsg {
  font-size: 1.8em;
  margin-bottom: 30px;
}